Your Social Media Fingerprint
Clever! By exploiting the redirect pattern that most social networks use for logging in, and assuming that site’s favicon isn’t stored in a CDN, it’s possible to figure out whether someone is logged into that site.

Clever! By exploiting the redirect pattern that most social networks use for logging in, and assuming that site’s favicon isn’t stored in a CDN, it’s possible to figure out whether someone is logged into that site.